定語從句what的用法
定語從句中能不能用what?如果可以，那么大家知道怎么用？下面是小編為大家整理的定語從句what的用法，希望能夠幫助到大家。
what是不能引導定語從句的.that可以引導定語從句.
what只能用來引導名詞性從句,比如主語從句,如：What he said was not ture.（他說的不是真的.） 或者賓語從句,如：I don't believe what he said.（我不相信他說的話.）而定語從句屬于形容詞從句.
�。╰hat可以引導的從句類型較多,只回答在定語從句中的用法.）
that作為關系代詞,引導定語從句,修飾其先行詞.如：All that glitters is not gold.（發(fā)光的不都是金子）定語從句that glitters修飾先行詞all,起形容詞作用,所以定語從句屬于形容詞從句.在這句話中,that其實是代替了先行詞all,在從句中作glitter的主語.
that也可以在從句中作賓語,有時可以省略掉,如：The car (that) I hired broke down after five kilometers.(我租來的車五公里后就拋錨了.）that替代car,在從句that I hired中作hire的賓語.
你可以比較以下一組句子.
What I said is true.我說的是實話.（what引導名詞從句,在句中作主語,what前沒有任何東西）
All that I said is true.我說的一切是實話.（that引導定語從句,在句中作定語,all是先行詞,that I said修飾all）
定語從句中能不能用what?
定語從句（Attributive Clauses）在句中做定語,修飾一個名詞或代詞,被修飾的`名詞,詞組或代詞即先行詞.定語從句通常出現(xiàn)在先行詞之后,由關系詞（關系代詞或關系副詞）引出.
關系代詞有：who,whom,whose,that,which等.
關系副詞有：when,where,why等.
關系代詞引導的定語從句
關系代詞所代替的先行詞是人或物的名詞或代詞,并在句中充當主語、賓語、定語等成分.關系代詞在定語從句中作主語時,從句謂語動詞的人稱和數(shù)要和先行詞保持一致.
1）who,whom,that
這些詞代替的先行詞是人的名詞或代詞,在從句中所起作用如下：
Is he the man who/that wants to see you?
他就是你想見的人嗎?（who/that在從句中作主語）
He is the man whom/ that I saw yesterday.
他就是我昨天見的那個人.（whom/that在從句中作賓語）
2) Whose 用來指人或物,(只用作定語,若指物,它還可以同of which互換）,例如：
They rushed over to help the man whose car had broken down.那人車壞了,大家都跑過去幫忙.
Please pass me the book whose (of which) cover is green.請遞給我那本綠皮的書.
3）which,that
它們所代替的先行詞是事物的名詞或代詞,在從句中可作主語、賓語等,例如：
A prosperity which / that had never been seen before appears in the countryside.農(nóng)村出現(xiàn)了前所未有的繁榮.（which / that在句中作賓語）
The package (which / that) you are carrying is about to come unwrapped.你拿的包快散了.(which/that在句中作賓語）
關系副詞引導的定語從句
關系副詞可代替的先行詞是時間、地點或理由的名詞,在從句中作狀語.
1）when,where,why
關系副詞when,where,why的含義相當于"介詞+ which"結構,因此常常和"介詞+ which"結構交替使用,例如：
There are occasions when (on which) one must yield.任何人都有不得不屈服的時候.
Beijing is the place where (in which) I was born.北京是我的出生地.
Is this the reason why (for which) he refused our offer?這就是他拒絕我們幫助他的理由嗎?
2）that代替關系副詞
that可以用于表示時間、地點、方式、理由的名詞后取代when,where,why和"介詞+ which"引導的定語從句,在口語中that常被省略,例如：
His father died the year (that / when / in which) he was born.他父親在他出生那年逝世了.
He is unlikely to find the place (that / where / in which) he lived forty years ago.他不大可能找到他四十年前居住過的地方.
1）what = the thing which；whatever = anything
What you want has been sent here.
Whatever you want makes no difference to me.
2) who= the person that whoever= anyone who
�。ㄥe）Who breaks the law will be punished.
（錯）Whoever robbed the bank is not clear.
�。▽Γ￤hoever breaks the law will be punished.
�。▽Γ￤ho robbed the bank is not clear.
3) that 和 what
當that引導定語從句時 ，通常用作關系代詞，而引導名詞性從句時，是個不充當任何成分的連接詞。賓語從句和表語從句中的that�？墒÷�。What只能引導名詞性從 句， 用作連接代詞，作從句的具體成分，且不能省略。
I think (that) you will like the stamps.
What we need is more practice.
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